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# Pressure-Volume Relationship

APPH12-C4GFGG

A group of physics students study the behavior of a gas by compressing a piston into a cylinder. No air can escape or enter the cylinder. The students take all their measurements slowly, always waiting until the temperature of the gas equalizes with the temperature of the surroundings. The group’s results are shown in the graph below.

Which of the following relationships can the students conclude using this graph alone?

A

${P}*{V}=constant$

B

${P}*{V}=constant*T$

C

${P}*{V}=constant*n*T$

D

${P}*{V}=n*R*T$